A Finite Element Stress Analysis of Porous-metal Implant Coatings PDF Download

Author: Phillip Byron Messersmith
Publisher:
ISBN:
Category :
Languages : en
Pages : 122

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Author: Kenneth Raymond St. John
Publisher:
ISBN:
Category :
Languages : en
Pages : 136

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Author: Hélène Vaillancourt
Publisher: National Library of Canada = Bibliothèque nationale du Canada
ISBN: 9780315928350
Category :
Languages : en
Pages : 372

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Author: Wade H. Shafer
Publisher: Springer Science & Business Media
ISBN: 1461305993
Category : Science
Languages : en
Pages : 411

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Masters Theses in the Pure and Applied Sciences was first conceived, published, and disseminated by the Center for Information and Numerical Data Analysis and Synthesis (CINDAS) * at Purdue University in 1 957, starting its coverage of theses with the academic year 1955. Beginning with Volume 13, the printing and dissemination phases of the activity were transferred to University Microfilms/Xerox of Ann Arbor, Michigan, with the thought that such an arrangement would be more beneficial to the academic and general scientific and technical community. After five years of this joint undertaking we had concluded that it was in the interest of all con cerned if the printing and distribution of the volumes were handled by an interna tional publishing house to assure improved service and broader dissemination. Hence, starting with Volume 18, Masters Theses in the Pure and Applied Sciences has been disseminated on a worldwide basis by Plenum Publishing Cor poration of New York, and in the same year the coverage was broadened to include Canadian universities. All back issues can also be ordered from Plenum. We have reported in Volume 32 (thesis year 1987) a total of 12,483 theses titles from 22 Canadian and 176 United States universities. We are sure that this broader base for these titles reported will greatly enhance the value of this important annual reference work. While Volume 32 reports theses submitted in 1987, on occasion, certain univer sities do report theses submitted in previous years but not reported at the time.

Author: P. Ducheyne
Publisher:
ISBN:
Category : Fatigue
Languages : en
Pages : 11

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Porous coated Ti-6Al-4V has a bending fatigue strength that is approximately one-third that of the uncoated material. This reduction in strength is due primarily to stress concentrations caused by the interfacial geometry between the porous coating and the substrate. An unconventional interfacial geometry, the porous coated nodule, has been shown to reduce the stress concentration factor compared to conventional porous coatings in finite element modeling. We report here on bending fatigue testing to determine whether the fatigue strength of the new geometry is better than that of the conventional porous coating geometry. We also report on modeling of shear loading to determine whether the new geometry lowers stress concentrations under this mode of loading as well as under bending loading. The fatigue strength of the nodule geometry was found to be 305 (+/- 12) MPa, which is greater than the strength of conventional porous coated specimens. In addition, the porous coated nodule was seen to reconcile the differences in the results for modeling under shear and bending loads and can thus reduce stress concentrations under both modes of loading.

Author: Jack E. Lemons
Publisher: ASTM International
ISBN: 0803109652
Category : Alloys
Languages : en
Pages : 418

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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 456

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Publisher:
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Category : Disabled veterans
Languages : en
Pages : 1136

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Author: John J. Callaghan
Publisher: Lippincott Williams & Wilkins
ISBN: 9780781750929
Category : Medical
Languages : en
Pages : 872

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Now in its Second Edition, this two-volume reference is the only current book available that focuses on the adult hip. More than 100 chapters by the foremost leaders in hip surgery provide comprehensive coverage of disorders of the adult hip—from practical basic science to detailed surgical techniques including hip arthroscopy and developing techniques in minimally invasive surgery. More than 2,600 illustrations complement the text. This edition has new chapters on minimally invasive surgery of the hip. Other new topics covered include use of fiber metal mesh in acetabular revision reconstruction, revision press-fit Wagner type of stems, and implant retrievals.

Author: Chi Chen
Publisher:
ISBN:
Category :
Languages : en
Pages :

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ABSTRACT: In Chapter 1, a brief introduction of nanoindentation and finite element method is presented. General procedures have been developed based on FEM modeling of nanoindentation data to obtain the mechanical properties of thin films. Selected FEM models are illustrated in detail. In Chapter 2, nanoindentation test is simulated using finite element method based on contact mechanics approach. The relationship between load and indentation depth is obtained. The numerical results show good agreement with experimental data. It is shown that FEM is an effective tool for simulation of nanoindentation tests of metallic films. However, limitations caused by simplification of models and assumptions should not be neglected. In Chapter 3, finite element method is used to analyze bonded repair structure of aluminum plates with Multiple Site Damage (MSD). A 2-D 3-layer technique is used to deal with the damage area. A typical aluminum plate with multiple collinear twin cracks is taken as an example. The effects of relative position of two cracks, patch size, and patch thickness on stress intensity factors are studied in detail. The results reveal that the stress intensity factors at the tips of collinear twin cracks can be reduced greatly through bonded composite repair. In order to increase the performance of the patch repair, the adhesive properties, the patch length and thickness must be optimized. In Chapter 4, finite element method is used for thermo-mechanical analysis of porous coatings in steel micro channels used for catalysis. Thermal stresses in the coating due to temperature changes are obtained. The effects of micro channel geometry on thermal stresses are studied in detail. The results reveal that in order to increase the mechanical performance of the coatings, film thickness and profile geometry must be optimized. Chapter 5 summarizes major results and outlines future work.